Medina County
400 Mbps Air Fiber. No contracts. No data caps. Local support you can actually reach.
La Coste is a small incorporated city on US-90 in eastern Medina County, roughly halfway between Hondo and San Antonio, anchored by Our Lady of Grace Catholic Church and Medina Valley ISD families.
Wired options in 78039 are mostly older DSL, and many households have turned to satellite. STI's Air Fiber is 400 Mbps down / 25 Mbps up for $65/month — no contract, taxes included.
ZIP code served: 78039
Coverage note: Most La Coste addresses are in coverage. Properties on the outskirts or on county roads should call (830) 429-4149 to confirm line-of-sight before scheduling.
La Coste's spot on US-90 has made it popular with San Antonio commuters, and Medina Valley ISD's online coursework means families need a connection that handles homework, testing platforms, and video calls. Installs and support come from our team in Hondo.
The town was founded along the railroad in 1881; Our Lady of Grace was built in 1912.
When something goes wrong, you call (830) 429-4149 — and you talk to someone who lives and works in South Texas. Not a ticket system. Not an overseas call center. And new customers are installed within one business day.
Broadband Facts
South Texas Internet
Velocity 400
Fixed Wireless Broadband
This Monthly Price is not an introductory rate.
This Monthly Price does not require a contract.
Additional Charges & Terms
Discounts & Bundles
Call (830) 429-4149 to ask about available discounts.
Speeds Provided with Plan
Data Included with Monthly Price
Customer Support: (830) 429-4149
Yes — South Texas Internet serves La Coste (ZIP code 78039) and the surrounding Medina County area with Air Fiber fixed wireless. Most La Coste addresses are in coverage. Properties on the outskirts or on county roads should call (830) 429-4149 to confirm line-of-sight before scheduling.
400 Mbps down and 25 Mbps up covers online homework, testing platforms, and video calls at the same time — useful for La Coste families who commute to San Antonio on US-90 part of the week and work from home the rest. No data caps.
One plan, one price: Velocity 400 is $65/month flat for 400 Mbps download and 25 Mbps upload. No contracts, no data caps, no setup fees, and taxes are included.
Air Fiber comes from a ground-based tower here in South Texas, not a satellite in orbit. Many Medina County households compare it with Starlink, whose 400 Mbps plan is $130/month; STI is $65/month with 25 Mbps upload for video calls and remote work — $780/year less than Starlink's 400 Mbps plan.
Call (830) 429-4149. Support is based in Hondo, TX — you talk to someone local, not an overseas call center — and new customers are typically installed within one business day.
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